Sea-water evaporator.



W. WEIR.

SEA WATER EVAPORATOR.

APPLICATION FILED JUNE 3, 1912.

lm mh Patented Dec. 31, 1912:

Q JC ZOM 40 portion which contains the heating coils,

subject of the King of Great Britain and OF CATHGAET, GLASGQW. SCQTLANID.

ens-wa ren nvaroesrcn.

Specification of Application filed bune 3, 1912. Sierial No. 701,369.

To all whom it may concern Be it known that 1, WILL AM \Vnrs, a

Ireland,- residing at Cathcart Glasgow, Scotland, have invented certain new and useful Improvements in Sea-Water Evaporaters, of which the following is a speciiicat-ion.

This invention relates to evaporators such as are commonly employed for the obtaining of fresh water "from sea water on board ship, the sea water being heated and evaporated by means or steam coils located in the lower part or the shell of the evaporator. It is necessary to so design the evaporators as to allow of these coils being withdrawn. In designs of evaporator heretofore in use, as fares I am aware, it is necessary, prior to withdrawing the coils from the shell, to move the coils laterally within the shell ina direction at right angles to the subsequent motion of withdrawal. This double motion makes it necessary to havethe shell considerably. larger in horizontal section than is requisite to contain the coils. Now, considerations of space and weight which are of special importance in warships -render it desirable that the evaporators used on board ship should be, as far as possible, of-small and light construction. My invention consists in a construction and combination of elements which will be described in the following specification and more particularly set forth in the annexed claims and which allow of a substantial re duction being efiected in the bulk and weight of an cvaporznor.

Referring to the accompanying drawing:Fig ure 1 is vertical section of the lower portion of an evaporator, that. is, the

the section being taken on the line 3-3 of Fig. 2. Fi 2 is a horizontal section on the line A-A of Pi 1.

Several fittings, ranges, and connections have been omitted from one or both or the views as being unnecessary to illustrate the present invention.

a is the shell of the evaporator and i), 7), are the heating coils. Any number of heat-- ing coils may be employed. In the design of evaporator illustrated five coils are shown, each being independent of the others and having its two ends connected respectively to a live steam inlet chamber 0 lower portion and .czhaustor drain chamber 01. These chambers are arranged vertically in the evaporator she and the coils are connected to them y means of couplings each' consisting of a brazing-metal hollow coupling piece c and a mild-steel hollow tail piece f; the latter being perforated at g, g, in order to place the interiors of the coils in communication with the interiors of the inlet and exhaust chambers. The axes of the couplings are'parallel to each other, and the couplings are inserted into the chambers fIOl'l1,;tll E inside of the shell by a straight-line movement parallel to the axes of the couplings and are secured by nuts it, it, which are screwed on to the ends of the tail pieces from the outside of the shell.

A port or doorway m is provided for the insertion and withdrawal of the coils and is situated on the side of the shell opposite the steam inlet and exhaust chambers;

door is covers this doorway. The axes of the couplings are arranged parallel to the line of motion' of the coils when being inserted and withdrawn through the doorway. Therefore, when the nuts 71., it have been removed, the coils can be withdrawn from connection with the shell and through the doorway by a, single straight-line movement,

and consequently the horizontal section of the coil-containing portion of the shell need he no greater than is necessary to contain the coils.

' vl Having now described my invention, what I claim. as new and desire to secure by Let ere Patent 1S 1. ln an evaporator. in combination,- a

shell, plurality of coils adapted for heat" andevaporating sea water within the of said shell, said coils being arrangedin a vertical tier, a vertical steam inlet chamber located in the said shell, :1

ing

vertical exhaust chamber located in the said shell, a plurality of couplings arranged vertically one above the other and adapted to connect the one end or each coil to the said steam. inlet chamber, a plurality or". con plings similarly arranged "and adapted to connect the other end of each coil to thesaidexhaust chamber, said couplings beingadapted to be disengaged from said shell by a straight-line movement parallel to their sizes, a doorway located in the shell on the side opposite to the said steam inlet and exhaust chambers and. adapted for'thc ad mission and withdrawal offsaid coils by the same straight-line increment as disengages the said couplings from the said shell, and a door adapted to cover said doorway.

2. In an evaporator, in combination, a shell, a plurality of coils adapted for heating and evaporating sea .water Within the lower portion of said shell, said coils being arranged in a vertical tier, a vertical steam inlet chamber located in the said shell, a vertical exhaust chamber located in the said shell, a plurality of couplings arranged vertically onevabove the other and adapted to connect the one end of each coil to the said steam inlet chamber, plings similarly arranged and adapted to connect the other end of each coil to the said exhaust chamber, said couplings being adapted to be disengaged from said shell by a plurality of coumeant ia straight-line movement parallel to their axes, nuts adapted to secure said couplings to said shell andto be operated from the outsidev of the shell, a doorway located in the shell on the side opposite to the said steam inlet' and exhaust chambers and adapted for the admission and Withdrawal of said coils by the same straight-line move-. ment as disengages the said couplings from the said shell, and a door adapted to cover said doorway.

In testimony whereof, I aifix my signa ture in presence of two Witnesses.

WILLIAM lVElR. Witnesses:

ROBERT MORRISON NELLSON, DAVID WATT PAGE. 

